Receptacle for cylinder finishing waste



June 26, 1956 1 H. CHRISTIANSEN 2,751,729

RECEPTACLE FOR CYLINDER FINISHING WASTE Filed spt. 50, 1954 VYC! 15.2-

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United States Patent O RECEPTACLE FOR CYLINDER FlNlSHlNG WASTE Leslie H. Christiansen, Milwaukee, Wis.

Application September 30, 1954, Serial No. 459,501

Claims. (Cl. 51-262) This invention relates in general to improvements pertaining to the art of finishing cylinder bores, and relates more specifically to improvements in receptacles for collecting the borings or grindings removed from engine cylinder bores while the latter are being dressed or finished.

The primary object of the invention is to provide an improved receptacle for cylinder grinding or boring waste, which is simple in construction and highly effective in use.

When the cylinders of motor vehicles are to Vbe refinished with the aid of grinding or boring tools, it is customary to effect such operation by removing the upper cylinder heads and inserting these tools through the upper open ends of the bores without removing the engine block from the vehicle. ln order to prevent the waste removed from the cylinder bores from dropping into the crankcase and onto the crankshaft bearings, it has heretofore been common practice to provide collapsible receptacles insertible downwardly through the cylinder bores .and cooperable .in various ways with the lower ends of the bores which were being dressed, for catching the waste material. These bore redressing operations are sometimes carried on in the presence of relatively small .quantities of lubricant making it possible to collect all of the waste in a relatively small receptacle, but in other cases the refinishing is done and the waste particles are ushed out with an abundance of liquid such as water so .that vsome means for :constantly carrying away the excess liquid was needed.

In-any event it is necessary to effectively seal the joint between the mouth of the .receptacle and the .cylinder block around the flower end of -each bore, in order .to

:prevent possible escape fof waste material into the ycrankcase :and bearings, .and it 'is Valso ydesirable to provide inexpensive and rapidly applicable waste .catchersso as to .reducethe reiinis'hingcost to a minimum. Then too, these devices should be capable of effectively performing their function .when used with either a limited quantity of lubricant or with an abundance of flushing liquid, and

unone .of the prior waste receptacles .have been capable of meeting all of these conditions.

`It is therefore an .important object of :the present invention to provide Va grinding'or boring waste collecting device which is easily applicable through a cylinder bore and .attachable to the lower end ofthe cylinder around the boreso as to 4positively prevent escapeof objectionable waste material .into the crankcase and bearing zones of the motor.

Another important object of theinvention is torprovide .a wastereceptacle which may be used effectively when .reiinishing cylinder bores lwith either a limited -or an Vinto proximity' with the latter.

VStill another important object of the invention is to provide an improved kreceiver for cylinder refinishing waste which may be readily appliedto cylinder bores of various diameters and used by a novice to effectively perform its function.

These and other more specific objects and vadvantages of the invention will be apparent from the following detailed description from which it will be noted Vthat the gist of the improvement is the provision of va borings waste catcher comprising a flexible sack or bag of inexpensive and readily renewable material having its mouth portion provided with a permanent magnet assemblage for :sealingly attaching the mouth portion to a ferrous engine block around the lower end of each cylinder bore which is rtobe refinished, the waste catching unit being insertiblebodily through the cylinder bore. A clear conception of the features constituting the improvement, and of the construction and functioning of several typical embodiments of the invention, may be had by referring to the drawing accompanying and 'forming a part of this specification wherein like reference characters designate the same or similar parts in the various views.

Fig. l is a central vertical section through one of several adjacent engine cylinders illustrating the manner in lwhich an improved batch waste receptacle canrbeinserted through the cylinder bore with a human hand;

Fig. 2 is a similar section through the same cylinder showing one of the improved batch collecting receptacles partly in elevation and partly in section sealingly applied to the lower cylinder end, and also showing a honing or redressing tool inserted within the cylinder bore;

Fig. 3 is a part sectional and fragmentary perspective view-of one of the improved batch type waste collecting devices showing details of the normally hidden parts of the magnetic attaching assembly;

Fig. 4 is a part sectional elevation of one of the improved continuously draining waste receptacles, the kView being similar to that of Fig. 2;

Fig. 5 .is anvenlarged fragmentary and sectional view showing the details of construction of themagnetic attaching and sealing assemblage, having an expansible elastic band for holding Vthe reversely folded bag mouth applied within the bag; and

Fig. 6 is a view similar to that of Fig. 5, but showing a contractable elastic band .for .the reversely folded mouth portion applied externallyofthe bag.

While the embodiments of the invention specifically shownvand described, make use of transparent plastic bags and a magnet assemblageespecially adapted to cooperate with the engine cylinder block Vof a motor driven vehicle in order toguard the crankcase bearings, itis not the intent tounnecessarily restrict .the `use of the improvedfeatures ltosuch application; .and it is also contemplated nthat specific descriptiveterms employed herein be given the 'broadest possible interpretation consistent with the .dis-

closure.

Referring to Figs. .l, 2, 3 and 5 vof the drawings, the improved :batch waste catching receptableshown therein, comprises in general, a flexible sack or bag V8 having a sealedbottom 9 and a.reverse fold 10 at its mouth; an annular resilient tubular member .11 disposed within the fold 10 of the bag mouth and having therein an annular series of cylindrical permanent magnets 12; and an elastic -expansible band 13 coacting with the reversely folded mouthportion of the .bag 8 to retain Athe resilient Vmember 11 within the .fold 10. f

The ilexiblebag 8 may be formed of transparent plastic material such as rubber hydrachloride capable of resisting moisture, and the bag bottom -9 may be sealed ,by the application of heat or adhesive while the :opposite sidesrof thesack `may .be gussetted. The annular tubular resilient member is preferably formed of a metallic coiled spring having its ends united by a connector as shown in Fig. 2 to provide a continuous resilient ring; and the cylindrical permanent magnets 12 are spaced apart endwise and are preferably formed of Alnico metal or the like having high magnetic permeability, these magnets being polarized as indicated in Fig. 5.

The elastic annular band 13 may be formed of rubber or rubber composition, and should be cemented or otherwise permanently secured to the edge portion of the bag mouth. When in use, this band 13 serves to retain the member 11 confined within the reverse fold 10 at the mouth of the bag 8, and the band may either be expansible and cooperable with the interior of the inturned fold 10 as in Fig. 5, or the band 13 may be contractable and cooperable with the exterior of the outwardly turned fold 10 as in Fig. 6. ln either case the band 13 functions to press the free edge portion of the bag mouth snugly against the annular bag wall adjacent to the resilient ring member 11.

The bottom sealed batch sack shown in Figs. l, 2 and 3 is especially adapted for use in cases where relatively small quantities of liquid are used during the cylinder refinishing operation; but when an abundant quantity of flushing liquid is employed the bag S may be provided with a tubular discharge spout 16 at its bottom 9 as illustrated in Fig. 4. This spout 16 may be cemented in v place and is adapted for the reception of a fluent ma- .tube 17 may also be provided with a shut-off clamp 18 as shown, but the upper attachment portion of this constant drainage receptacle is the same as previously described.

When either type of the improved waste receptacle has been properly constructed and assembled, it may be readily applied to a bore 20 of an engine cylinder block 21 as shown in Fig. l by inserting a band 22 within the bag 8 and forcing the unit downwardly through the bore 20. The resiliency of the member 11 and the flexibility of the bag 8 and of the band 13 will readily permit the unit to collapse sufficiently 'to permit it to be thus forced through the bore 20, and when the assemblage has passed completely through the cylinder the resilient ring member 11 will promptly assume its circular form and the magnets 12 will immediately become effective to clamp the bag mouth portion or fold 19 against the lower face 23 of the iron cylinder block.

The receptacle may then be readily centralized with respect to the bore 20 as in Fig. 2 whereupon the forcible permanent magnets 12 will seal the joint between the bag 8 and the bore 20 against possible escape of liquid and other waste material. A rotary hone 24 may be subsequently applied to the bore 20 as shown in Fig. 2 and all Waste material dropping from within the cylinder bore will obviously be trapped by the distended bag 8. If excessive liquid is utilized during the bore refinishing operation a sack or bag 8 provided with a Waste material discharge tube such as shown in Fig. 4, may be employed and applied in a similar manner to that illustrated in Fig. 2, and the retainer band 13 such as shown in either Fig. 5 or Fig. 6 may be utilized to maintain the resilient annular member 11 within the bag fold 10.

Upon completion of the refinishing operation, the hone 24 may be removed, whereupon the bag 8 with its contents may be readily released by exerting manual downward pressure against the bag bottom 9 and by subsequently slightly collapsing the assemblage as in Fig. l and withdrawing it upwardly through the finished bore 29. The same bag assembly may be utilized while refinishing subsequent cylinder bores 20, and when a sack has become torn or otherwise damaged it may be readily replaced at slight cost and applied to the same member and magnet assemblage previously utilized.v

From the foregoing detailed description it will be apparent that the present invention in factA provides 'a waste catching receptacle which is simple and inexpensive in construction, but which is readily applicable to the cylinders 21 and provides an effective seal for preventinglundesirable escape of waste material. When assembling the magnetic sealing ring, the individual cylindrical permanent magnets 12 should be snugly embraced by the coil spring member 11 with the adjacent ends of the magnets being of like polarity as shown in Fig. 5 to thereby repel each other in order to maintain the magnets in spaced relation and to prevent bunching thereof. Such spacing of the successive magnets 12 is desirable in order to insure distortion of the magnetic ring while inserting the waste receptacle through cylinder bores 20 of smaller diameter than that of the member 11. The flexible band 13 serves to snugly confine the ring member 11 within the reverse fold 10 of the bag 8, while permitting convenient replacement of the bag, and the improved assemblage has proven highly satisfactory and successful in actual use.

It should be understood that it is not desired to limit this invention to the exact details of construction of the waste receptacle herein shown and described, for various modifications within the scope of the appended claims may occur to persons skilled in the art.

I claim:

l. A receptacle for cylinder finishing waste, comprising, a bag having its mouth portion provided with a magnet assemblage formed to hold said bag portion in sealing engagement with a ferrous end of the cylinder adjacent to its bore.

2. A receptacle for cylinder finishing waste, comprising, a bag having its mouth portion provided with an annular collapsible magnet assemblage formed to magnetically hold said bag portion in sealing engagement with a lower ferrous end of the cylinder around and heyond its bore.

3. A receptacle for cylinder finishing Waste, comprising, a flexible bag having a reversely foldable mouth, kan annular resilient tubular member disposable within the reversely folded mouth of the bag, and an annular series of magnets confined within said member and being cooperable with the lower ferrous end portion of the cylinder to hold the bag mouth in sealing engagement with said cylinder end portion.

4. A receptacle for cylinder finishing waste, comprising, a flexible bag having a reversely foldable mouth, an annular resilient tubular member disposable within the reversely folded mouth of the bag, an annular series of magnets confined within said member and being cooperable with the lower ferrous end portion of the cylinder to hold the bag mouth in sealing engagement With said cylinder end portion, and an elastic band cooperable with said folded bag mouth to maintain said member within the fold.

5. A receptacle for cylinder finishing waste, comprising, a bag having its mouth portion reversely folded about an annular permanent magnet assemblage formed to hold said folded bag portion in sealing engagement with a ferrous end of the cylinder adjacent to its bore.

V6. A receptacle for cylinder finishing waste, comprising, a bag having its mouth portion reversely folded about an annular collapsible permanently vmagnetic assemblage formed to magnetically hold said folded bag portion in sealing engagement with a lower ferrous end of th cylinder around and beyond the cylinder bore.

7. A receptacle for cylinder finishing waste, comprising, a flexible bag having a reversely foldable mouth, an annular tubular coil spring disposable within the reversely folded mouth of the bag, and an annular series of endwise separated permanent magnets confined within said coil spring and being cooperable with the lower ferrous end portion of the cylinder to hold the bag mouth in sealing engagement with said cylinder end portion.

8. A receptacle forcylinder finishing waste, comprising, a flexible bag having a reversely foldable mouth, an

annular tubular coil spring conned within the reversely folded mouth of the bag, an annular series of endwise separated permanent magnets confined within said coil spring and being cooperable with the lower ferrous end portion of the cylinder to hold the bag mouth in sealing engagement with said cylinder end portion, and an elastic band cooperable with the free edge of said folded bag mouth to maintain said member Within the fold.

9. A receptacle for cylinder nishing waste, comprising, a flexible bag having an upper reversely folded mouth and a bottom drain, an annular resilient tubular member disposable within the reversely folded mouth of the bag, and an annular series of magnets conned within said member and being cooperable with the lower ferrous end portion of the cylinder to hold the bag mouth in sealing engagement with said cylinder end portion.

10. A receptacle for cylinder nishing Waste, comprising, a exible bag having an upper reversely folded mouth and a bottom drain, an annular tubular coil spring disposable within the reversely folded mouth of the bag, an annular series of eudwise separated permanent magnets conned Within said coil spring and being cooperable with the lower ferrous end portion of the cylinder to hold the bag mouth in sealing engagement with said cylinder end portion, and an elastic band cooperable with the free edge of said folded bag mouth to maintain said member within the fold.

References Cited in the le of this patent UNITED STATES PATENTS 1,633,688 Thaete June 28, 1927 1,660,532 Steinbach Feb. 28, 1928 1,877,363 Saville Sept. 13, 1932 1,890,675 Doerr et al. Dec. 13, 1932 2,143,912 Freborg et al Jan. 17, 1939 

